- First BLF light with our own custom driver. - First BLF light with our own custom firmware. - First special-edition with a direct-drive FET, so it has the brightest turbo mode you can get.- First special-edition with a regulated lower-power second channel for stable and efficient low modes. - True moon mode. - Up to 1600 lumens from a single emitter in a small tube light (with the right battery, and a spring bypass mod). Closer to 1400 lumens with no mods and lower-amp batteries. - User-toggle-able mode memory. - User-toggle-able mode groups. - Well-spaced visually-linear output modes. - Includes some hidden modes for those who want them. - Battery check mode!- First clicky-switch stock light with both forward and backward mode navigation in a single tap (short/medium press). - With mode memory off, the user can access 4 different modes (including the highest and lowest) within 1 second. - Fast PWM so the pulsing won't be visible.- The firmware and the driver designs are available for anyone who wants to modify them.